CONSOLIDATED BALANCE SHEETS (USD $) In Thousands, unless otherwise specified	Dec. 31, 2012	Dec. 31, 2011
Current assets:
Cash and cash equivalents	$ 8,305	$ 13,057
Receivables, net of allowance for doubtful accounts of $278 and $436	22,530	25,317
Inventories	8,379	9,297
Income taxes receivable	596	498
Deferred income taxes, net	1,887	1,559
Prepaid expenses	2,092	1,801
Other	1,399	964
Total current assets	45,188	52,493
Investments	3,213	4,277
Property, plant and equipment	437,623	397,140
Accumulated depreciation and amortization	(254,664)	(242,886)
Property, plant and equipment, net	182,959	154,254
Other assets:
Goodwill	29,028	27,303
Intangible assets, net	4,811	2,314
Deferred costs and other	3,105	3,345
Total other assets	36,944	32,962
Total assets	268,304	243,986
Current liabilities:
Extended term payable	8,115	6,920
Accounts payable	5,818	4,661
Accrued expenses and other	10,881	10,175
Deferred revenue	7,362	6,251
Current maturities of long-term obligations	1,648	1,407
Total current liabilities	33,824	29,414
Long-term liabilities:
Debt obligations, net of current maturities	135,133	118,828
Financial derivative instruments	2,432	2,469
Accrued income taxes	236	154
Deferred income taxes	34,265	30,627
Deferred revenue	1,085	1,131
Accrued employee benefits and deferred compensation	12,481	18,166
Total long-term liabilities	185,632	171,375
Total liabilities	219,456	200,789
Shareholders' equity:
Common stock, no par value, $.10 stated value Shares authorized: 100,000,000 Shares issued and outstanding: 13,519,131 in 2012 and 13,396,176 in 2011	1,352	1,340
Additional paid-in capital	15,950	15,683
Retained earnings	30,987	30,309
Accumulated other comprehensive income (loss)	559	(4,135)
Total shareholders' equity	48,848	43,197
Total liabilities and shareholders' equity	$ 268,304	$ 243,986